@stevm, I've now had 17 daily (M-F) treatments of radiation + capecitabine, with 11 more to go. I'm an outlier, in that I'm having a worse time with this than I did with FOLFIRINOX (8 cycles) -- ***but*** my capecitabine side effects are fairly mild.
I'm nauseated almost all the time despite alternating generic Zofran and generic Compazine -- that's the big problem, bc I can't do anything or even sit up in bed. Also, I'm very gassy; I have a little diarrhea (only on three days since 11-30-23); I have almost no appetite; and I've continued to lose weight since my Whipple (10-5-23).
I would cautiously say that I have less brain fog with capecitabine than FOLFIRINOX, but I'm not 100% sure. The variable is the anti-nausea med. I felt not-too-foggy from 11-30-23 thru about 12-12-23, when my secondary anti-emetic was generic Phenergan; after I switched to generic Compazine (c. 12-13-23), I felt a bit doped-up, but that's different from chemo brain-fog. (I'm reasonably good at detecting my level of fog bc I've worked mostly as a copy editor, meaning that I'm hyper-aware of how many typos I make, the types of typos I make, and the amt of time I need to digest a news article.)
Also: I'm not having any of the icky capecitabine side effects -- no mouth sores, no hand-foot disorder. So you can probably assume that you'll have an easier time with radiation + capecitabine than you did with FOLFIRINOX. Just be sure to moisturize the affected area twice daily with Eucerin or something similar (but not within the hour before treatment).
jk77. Thank you for the feedback. 17 down and 11 to go go. The end is in sight for you. I finished day 10 of 28 on Friday. So far no real side effects. I have not had mouth sores or hand/foot issues either. Hoping that continues to be the case. I haven't had stomach issues so far. I don't have a desire to eat but I do eat regularly I just don't really enjoy food like I once did. My weight has been steady since starting chemo back in June. I had a distal pancreatectomy and splenectomy prior to chemo. This surgery is less taxing than Whipple. I was concerned about brain fog from the capecitabine as I had terrible brain fog while on the FOLFIRINOX regimen. However, so far it has not been an issue. I'm routing for you as you get close to the end of treatment and for long term success. Enjoy the Holidays and Happy New Year.